276 ORISMOLOGY. 



the middle is less than that of the ends. Ex. Pos- 

 terior thigh of Locusta. PLATE XIV. FIG. 5. 



35. CALCEOLIFORM (Calceoliformis). Oblong, and some- 



what coarctate in the middle. Ex. Abdomen of 

 Chelomis. 



36. LAGENIFORM (Lageniformis). Bellying out and 



then ending in a narrow neck, something like a 

 bottle. Ex. Sperm-reservoir attached to the oviduct 

 in Pontia. PLATE XXX. FIG. 12. d. 



37. CONSTRICT (Constricta). Suddenly and dispro- 



portionably smaller at one end. PLATE XXII. 

 FIG. 15. 



38. LUNIFORM (Luniformis). Whose longitudinal sec- 



tion is lunate. PLATE XIII. FIG. 4. 



39. NODOSE (Nodosd). Having one or more knobs or 



swellings. PLATE XII. FIG. 5. 



40. GENICULATE (Geniculata). Bent so as to form a 



knee or angle. PLATE XII. FIG. 7. 



VII. SUPERFICIES. 

 i. PARTS. 



1. DISK (Discus). The middle of a surface. 



2. LIMB (Limbus). The circumference. 



3. MARGIN (Margo). The extreme sides. 



4. APEX (Apex}. The summit. 



5. BASE (Basis). The bottom. 



6. SUPINE SURFACE (Pagina superior). The tipper 



surface. 



7. PRONE SURFACE (Pagina inferior). The under 



surface. 



ii. ELEVATION AND DEPRESSION. 

 1. NAVICULAR (Navicularis). When two sides meet 



